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<p>TiO<sub>2</sub> inks were prepared with 1&#xa0;wt.% methyl cellulose as binder. The prepared inks contained 35, 50, 65, 70 and 72&#xa0;wt. % solid loading of TiO<sub>2</sub>. The rheological characteristics were studied by rheometer. Significant effect of temperature and solid loading of TiO<sub>2</sub> was observed in the viscosity of the inks. The viscosity of the inks increased with increased solid loading. Also, it was observed that the onset of gelation temperature of inks decreased with increase in solid loading. The viscosity of the inks decreased with increasing shear rate showing the shear thinning behavior suitable for direct ink writing. The yield stress of methyl cellulose-TiO<sub>2</sub> inks was found to increase with increasing solid content of TiO<sub>2</sub>. Sintering of TiO<sub>2</sub> was caried out at 1250&#xa0;°C and 1350&#xa0;°C for 180&#xa0;min. The microstructure showed a variation from porous structure to dense structure with increase in solid loading of TiO<sub>2</sub>.</p>

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Effect of Solid Loading of TiO2 on The Rheological Behaviour and Microstructure of Methyl Cellulose-TiO2 Inks by Direct Ink Writing

  • 期刊论文

  • 发表日期：

    2025年1月11日

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  • Pinaki Pal,
  • Debabrata Majumder,
  • P. Karuna Purnapu Rupa

摘要

TiO2 inks were prepared with 1 wt.% methyl cellulose as binder. The prepared inks contained 35, 50, 65, 70 and 72 wt. % solid loading of TiO2. The rheological characteristics were studied by rheometer. Significant effect of temperature and solid loading of TiO2 was observed in the viscosity of the inks. The viscosity of the inks increased with increased solid loading. Also, it was observed that the onset of gelation temperature of inks decreased with increase in solid loading. The viscosity of the inks decreased with increasing shear rate showing the shear thinning behavior suitable for direct ink writing. The yield stress of methyl cellulose-TiO2 inks was found to increase with increasing solid content of TiO2. Sintering of TiO2 was caried out at 1250 °C and 1350 °C for 180 min. The microstructure showed a variation from porous structure to dense structure with increase in solid loading of TiO2.